Gas-main.



M. G. MOORE 6a R. C. GLAZIER.

' GAS MAIN.

APPLICATION FILED JUNE 25, 1907.

936,01 3. l Patented oct. 5, 1909.

RNEY.

l UNITED STATES PATENT OFFICE.

MARSHALL G. MOORE AND RALPH C. GLAZIER, 0F JOI-INSTOWN, PENNSYLVANIA.

GAS-MAIN.

Specicaton of Letters Patent.

Patented Oct. 5, 1909.

Application filed June 25, 1907. Serial No. 380,683.

To all whom it may concern.'

Be it known that we, MARSHALL Gr. Moonn and RALPH C. GLAZIER, citizensof the United States, residing in the city of Johnstown, county ofCambria, and State of Pennsylvania, have invented certain new and usefulImprovements in Gas-Mains; and we do hereby declare the following to bea full, clear, and exact descrip-tion of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

Our invention relates in general to the construction of gas mains andmore especially to such as are used in distributing gas to coke ovens.

The object of the invention is to provide a main of the above describedclass of substantially rectangular form in cross section and ofconsiderable depth as compared with the width. The purpose of thisconstruction is to allow deposits which form in such pipes to accumulatein the lower portion thereof, still leaving suliicient area above tocarry the gas supply. A number of holes are arranged on one side of thepipe near the bottom, which are opened at intervals for the withdrawalof the accumulated deposits. These holes have cover-plates which aresecured by means of a flat bar hinged at one end by a bolt, and having anotched or slotted opening at the other end to pass o-ver thecorresponding bolt, the central portion of the bar pressing upon arounded boss at the center of the cover.

The ordinary round mains of small diameter soon become filled with adeposit .which cannot be steamed or washed out, but must be scraped outwith diiliculty, on account of their length and inaccessibility, whereaswith our improved main the cleaning doors can be easily taken off andthe deposits removed with but very little trouble or delay, and the gasneed not therefore, be shut off from the coke ovens, but for acomparatively short time. VVhen the bottom of the main has been lilledwith deposit, even to the extent of one-third of its capacity, or more,the pipe will supply all the gas required for use at the burners. Thismain may be made of cast iron, which is more durable than one of wroughtiron or steel.

Referring to the accompanying drawings, forming a part of thisspecification in which similar letters of refe-rence indicatecorresponding parts in all the ligurcsz-Figure 1 is a transversesectional view of the gas main on a line of the center of one of theholes in the sides, showing also the burner and connection and a portionof a coke oven in section. Fig. 2 is a top plan view of the gas mainwith a portion broken away to show more clearly the construction of thehole in the side and the cover-plate. Fig. 3 is a front elevation of aportion of our improved gas main.

1n Ithe drawings the gas main 1 is composed of lengths of piping, havingholes Q arranged on one side of the pipe near the bottom. These holesare closed by means of covers 3 each having two lugs or brackets 4 ontheir interior which rest upon the surface of the boundary of the holeitself, in order to maintain the cover in position and keep it fromslipping down, as will be readily seen by referring to Fig. 1.

On each side of the holes and cast integral with the gas main are studprojections into which stud-bolts 6 and 7 are secured. A flat bar S ishinged at one end to -the bolt 6 and the other end of said bar isnotched or slotted to catch under the head of the bolt 7, the centralportion of the bar passes over a boss 9 on the outside central portionof the hole cover, so that when the nuts on bolts 6 and 7 are screwed uptight, the cover is securely held in position. The cover is providedwith a handle 10. In the top of the main is a threaded opening 11 intowhich the connection 12 for the gas burner 13 which passes into thecombustion chamber 14 of the coke oven 15, is screwed.

Our improved gas main ismade up of sections which have outwardlyextending flanges at both ends, which are bolted together in the usualmanner. The mains are supported on lugs 17 and 18 which act with setscrews 16 to restrain the expansion of the oven wall, which devicehowever, is part of the oven and is not included in the presentapplication.

In order to remove one of the covers it is only necessary to unscrew thenuton the stud-bolt 7 when the flat bar S can be thrown back, thusreleasing the cover, which can be lifted away by means of the handle 10,and the deposit removed in a very short time. The cover can then bereplaced, the bar thrown back in its former position and the nut onstud-bolt 7 tightened. It will be observed that the lower edge of theopening is substantially coincident with the base of the main, thusfacilitating the operation of cleaning. importance.

Although we have shown and described our improved gas main inconsiderable de.-

tail, 'we do not wish to be limited to the.

exact and specific details set forth, but may use suoli substitutions,modifications or equivalent thereof, as are embraced within the scope ofour invention, as pointed out in th'e claims.

Having thus described our invention, what we claim and desire to secureby Letters Patent is:

l. As an article of manufacture, a pipe vsect-ion rectangular in crosssection, the depth being greater than the width thereof, said sectionbeing provided with openings in the sides, the lower edges of which aresubstantially coincident with the inn'er surface of the base of thepipe, a supporting lug, and external removable mechanical means forclosing said openings.

2. As an article of manufacture, a pipe section provided with openingsin the sides 'below the central portion thereof, the lower edge of theopenings being substantially coincident with the inner surface of thebase of the pipe, a supporting lug, projections on the outer surface oft-he pipe ad jacent to 'the openings, and covers secured by barsrevolubly mounted on the said projections.

3. A pipe or main provided with openingsyin the sides thereof, the loweredge of which is substantially coincident with the inner surface of thebase vof the main, `covers for the openings provided with bosses whichThis is a feature of greatl section, and a supporting are sphericalsegments on their central portion, pivoted `bars engaging 'said bossesand means for securing the bars at their free ends.

4. A pipe section rectangular in cross section, the depth being greaterthan "the width thereof, said section being provided with openings inthe sides, the lower edge of the openings being substantially coincidentwith the base of the main, the height of said openings not exceeding onehalf the height 'of the main, iianges at the ends of said pipe section,covers for said openings, each provided with a spherical boss on itscentral portion, 'handles 'on the covers, projections formed on theouter surface of the pipesections on the sides of each opening, and abar bolted to one of said projections, the opposite end of the bar beingprovided with a slot to engage ythe bolt on the projection at theopposite side of the opening, said bar- -engaging the boss on the cover.

A pipe section rectangular in cross section, the vdepth being greaterthan the width thereof, said section being provided with openings in thesides, the lower edges of which openings are substantially coincidentwith 'the base of the Vmain,rcovers for the openings, flanges at thejends of the pipe lug secured to the base or platform.

In testimony whereof we hereto afliX our signatures in the presence oftwo witnesses.

MARSHALL G. MOORE.

4 RALH C. 'GLAZIER Vitnesses';

WVM. E. CARN'EY, ELM'ER 'SEAVEZ

